CVE-2026-64536 is a vulnerability in Linux Kernel
Published on July 27, 2026
staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop
In the Linux kernel, the following vulnerability has been resolved:
staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop
The loop in is_ap_in_tkip() iterates over IEs without verifying that
enough bytes remain before dereferencing the IE header or its payload:
- pIE->element_id and pIE->length are read without checking that
i + sizeof(*pIE) <= ie_length, so a truncated IE at the end of the
buffer causes an OOB read.
- For WLAN_EID_VENDOR_SPECIFIC the code compares pIE->data + 12,
which requires pIE->length >= 16. For WLAN_EID_RSN it compares
pIE->data + 8, requiring pIE->length >= 12. Neither requirement
is checked.
Add the missing IE header and payload bounds checks and guard each
data access with an explicit pIE->length minimum, matching the
pattern established in update_beacon_info().
Products Associated with CVE-2026-64536
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Affected Versions
Linux:- Version 554c0a3abf216c991c5ebddcdb2c08689ecd290b and below ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7 is affected.
- Version 554c0a3abf216c991c5ebddcdb2c08689ecd290b and below d2055332297e24c63fffda943ef7a5eefc0a6019 is affected.
- Version 554c0a3abf216c991c5ebddcdb2c08689ecd290b and below 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209 is affected.
- Version 554c0a3abf216c991c5ebddcdb2c08689ecd290b and below 204b22c8df115370037248859bf0fa62db73a396 is affected.
- Version 554c0a3abf216c991c5ebddcdb2c08689ecd290b and below a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395 is affected.
- Version 554c0a3abf216c991c5ebddcdb2c08689ecd290b and below 4380b3860d887a13555ff024a58dfc05b490dfd6 is affected.
- Version 554c0a3abf216c991c5ebddcdb2c08689ecd290b and below 3bf39f711ff27c64be8680a8938bcc5001982e81 is affected.
- Version 4.12 is affected.
- Before 4.12 is unaffected.
- Version 5.15.212, <= 5.15.* is unaffected.
- Version 6.1.178, <= 6.1.* is unaffected.
- Version 6.6.145, <= 6.6.* is unaffected.
- Version 6.12.96, <= 6.12.* is unaffected.
- Version 6.18.39, <= 6.18.* is unaffected.
- Version 7.1.4, <= 7.1.* is unaffected.
- Version 7.2-rc3, <= * is unaffected.